CVE-2024-20474
A vulnerability in Internet Key Exchange version 2 (IKEv2) processing of Cisco Secure Client Software could allow an unauthenticated,…
- Published
- Updated
- Reserved
- Assigned by
- cisco
Description
A vulnerability in Internet Key Exchange version 2 (IKEv2) processing of Cisco Secure Client Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) of Cisco Secure Client. This vulnerability is due to an integer underflow condition. An attacker could exploit this vulnerability by sending a crafted IKEv2 packet to an affected system. A successful exploit could allow the attacker to cause Cisco Secure Client Software to crash, resulting in a DoS condition on the client software. Note: Cisco Secure Client Software releases 4.10 and earlier were known as Cisco AnyConnect Secure Mobility Client.
Timeline
ID reserved
By cisco
- 12 months later
· 12 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.1 | Medium4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| NVDNVD · Analyzed | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.62% · top 50% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Weakness
Affected products
- affected 4.9.00086
- affected 4.9.01095
- affected 4.9.02028
- affected 4.9.03047
- affected 4.9.03049
- affected 4.9.04043
- affected 4.9.04053
- affected 4.9.05042
- affected 4.9.06037
- affected 4.10.00093
- affected 4.10.01075
- affected 4.10.02086
- affected 4.10.03104
- affected 4.10.04065
- affected 4.10.04071
- affected 4.10.05085
- affected 4.10.05095
- affected 4.10.05111
- affected 4.10.06079
- affected 4.10.06090
- affected 4.10.07061
- affected 4.10.07062
- affected 4.10.07073
- affected 4.10.08025
- affected 4.10.08029
- affected 5.0.00238
- affected 5.0.00529
- affected 5.0.00556
- affected 5.0.01242
- affected 5.0.02075
- affected 5.0.03072
- affected 5.0.03076
- affected 5.0.04032
- affected 5.0.05040
- affected 5.1.0.136
- affected 5.1.1.42
- affected 5.1.2.42
- affected 5.1.3.62
What to do
Exploitation: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2024-20474)Record last updated .